/*
 * Copyright (C) 2010 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.wikbook.core.render.docbook.content.inline;

import org.wikbook.core.model.content.inline.LinkElement;
import org.wikbook.core.render.docbook.ElementTransformer;
import org.wikbook.core.xml.XMLEmitter;

/**
 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
 * @version $Revision$
 */
public class LinkTransformer extends ElementTransformer<LinkElement>
{

   @Override
   public void write(LinkElement element, XMLEmitter emitter)
   {
      switch (element.getLinkType())
      {
         case ANCHOR:
            if (element.getContainer().isNotEmpty())
            {
               write(element.getContainer(), false, emitter.element("link").withAttribute("linkend", element.getRef()));
            }
            else
            {
               emitter.element("xref").withAttribute("linkend", element.getRef());
            }
            break;
         case URL:
            if (element.getRef().startsWith("mailto:"))
            {
               emitter.element("email").content(element.getRef().substring("mailto:".length()));
            }
            else
            {
               if (element.getContainer().isNotEmpty())
               {
                  write(element.getContainer(), false, emitter.element("ulink").withAttribute("url", element.getRef()));
               }
               else
               {
                  emitter.element("ulink").withAttribute("url", element.getRef()).content(element.getRef());
               }
            }
            break;
         default:
            throw new AssertionError();
      }
   }
}
